A solenoid valve is a device that uses electromagnetic force to control the flow of liquid or gas. It consists of a solenoid coil , a valve body, and a valve core. When current passes through the solenoid coil, the magnetic field generated will attract or repel the valve core, thereby changing the channel state inside the valve body and controlling the flow of the medium.

Solenoid valves can be divided into direct-acting solenoid valves, guided solenoid valves, diaphragm solenoid valves, etc. according to their working principles and structural forms. Different types of solenoid valves are suitable for different working environments and media. Choosing the right solenoid valve is crucial for the normal operation of the system.

In general, the solenoid valve is an important control component. It plays a vital role in industrial production and provides convenience and efficiency for automated production. By understanding the working principle and application field of the solenoid valve, we can better understand its role and importance in industrial control systems.